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Geology of the San Juan Basin, New Mexico. Matthew Dixon Emil Johnson. Crevasse Canyon . Is coal bearing bedrock formation Formerly known as the callop formation The Dalton Sandstone unit Non-Marine Unit . Dakota Sandstone. Late Jurassic 86.5 thickness
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Geology of the San Juan Basin, New Mexico Matthew Dixon Emil Johnson
Crevasse Canyon Is coal bearing bedrock formation Formerly known as the callop formation The Dalton Sandstone unit Non-Marine Unit
Dakota Sandstone Late Jurassic 86.5 thickness Upper 15 meters Gryphea Layer Represents a Transgressive Deposit Transgressive deposits Oil and Gas producing Trapping Methods Unknown
Mancos Shale Early Cretaceous Is the Bulk of Marine Deposits in the San Juan Basin Shale's have Fractured due to Stress 13,000,000
Gallop Sandstone Overlays the Mancos Cretaceous Aged Shows a Steep Regression “Regression Gallop” Unconformity Separates upper “Transgressive Gallop” Oil and Gas Producing’ 140,000,000 350,000,000 MCF (per thousand cubic feet”
Mesaverde Group Point Lookout Sandstone, Transgressive Cliff House, Menefee Formation Point lookout lamented sandstone; traces carboniferous shale's Cliff House Similar; more porous Also unknown trapping method for Oil and Gas
Menefee Upwards Transitions from Fluvial sandstones to Shale's Coal Beds; lagoon environment Fossils (crocs and cretaceous turtles; Dinosaurs
Pictured Cliffs Highest Unit in Cretaceous Age; 75-70 million years Only 10-16 meters thick Not good oil producer; 55,000 Gas over 870,530.767 MCF Traps Lewis Shale